com.sun.squawk.vm
Class FP

java.lang.Object
  com.sun.squawk.vm.FP

public class FP
extends Object

This class contains the offsets and constants that define the layout of an activation frame for the current method. All the offsets are relative to the current frame pointer, FP.

Field Summary

static int	FIXED_FRAME_SIZE This is the number of slots that must be reserved for a call to a method above and beyond the slots it requires for its local variables and operand stack.
static int	local0 The offset of the slot containing the first local variable of the current method.
static int	method The offset of the slot containing the pointer to the current method.
static int	parm0 The offset of the slot containing the first parameter.
static int	returnFP The offset of the slot containing the FP of the caller of the current method.
static int	returnIP The offset of the slot containing the IP of the caller of the current method.

Constructor Summary

FP()

Method Summary

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

parm0

public static final int parm0

The offset of the slot containing the first parameter.

See Also:

Constant Field Values

returnIP

public static final int returnIP

The offset of the slot containing the IP of the caller of the current method.

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Constant Field Values

returnFP

public static final int returnFP

The offset of the slot containing the FP of the caller of the current method.

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Constant Field Values

local0

public static final int local0

The offset of the slot containing the first local variable of the current method.

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Constant Field Values

method

public static final int method

The offset of the slot containing the pointer to the current method.

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Constant Field Values

FIXED_FRAME_SIZE

public static final int FIXED_FRAME_SIZE

This is the number of slots that must be reserved for a call to a method above and beyond the slots it requires for its local variables and operand stack.

See Also:

Constant Field Values

Constructor Detail

FP

public FP()